| 贵州瓮安县老虎洞磷矿涌水孔钻探施工技术 |
| 投稿时间：2010-08-18 修订日期：2010-12-20 点此下载全文 |
| 引用本文：王征喜,刘东.贵州瓮安县老虎洞磷矿涌水孔钻探施工技术[J].钻探工程,2011,38(3):21-23.WANG Zheng-xi,LIU Dong. Drilling Technology in Gushing Water Hole of a Phosphate Mine in Guizhou[J]. Drilling Engineering, 2011,38(3):21-23. |
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| 中文摘要:贵州瓮安县老虎洞磷矿ZK311钻孔，由于钻孔涌水量大，承压水压力大，导致绳索取心钻具内管压不下；地层掉块严重，磷矿易被冲刷，矿心采取率难保证，钻杆接头磨损快，钻杆折断事故多；经过对钻头改进以及施工工艺创新，克服了复杂地层给钻进造成的困难，圆满地完成该孔的施工任务，取得了良好的钻探和地质效果。介绍了该孔的钻探工艺和施工技术措施。 |
| 中文关键词:磷矿钻探 涌水钻孔 掉块 矿心采取率 钻头 |
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| Drilling Technology in Gushing Water Hole of a Phosphate Mine in Guizhou |
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| Abstract:With the great water inflow and high pressure of confined water in ZK311 borehole in a phosphate mine in Guizhou, the inner tube for wire-line coring could not be put down. According to the serious block falling, phosphate erosion, uncertain core collecting rate, quick drilling pipe joint wearing and frequent drilling pipe breaking accident, drilling bit was modified and construction technology was innovated with good drilling and geological results. The paper introduced the drilling technology and the construction measures in this project. |
| keywords:phosphate mine drilling gushing water hole block falling core collecting rate drilling bit |
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